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Thursday Ukraine's largest nuclear power plant was cut off from the country's electricity grid, causing "widespread power outages across southern Ukraine," according to the New York Times. Friday afternoon it was reconnected to Ukraine's national power grid, the Times adds — "but its time offline renewed concerns about the safe operation of the plant..." The Guardian notes it's the first such disconnection in nearly 40 years. Three other power lines connecting the reactors to the grid "had already been taken out during the war," though when the fourth and final line went out, "the plant still received supplies of electricity from one remaining backup line connected to the nearby conventional power plant." (Though two other lines to that power plant were already also down.) "Disconnecting the plant from the grid is dangerous because it raises the risk of catastrophic failure of the electricity-run cooling systems for its reactors and spent fuel rods.... If all external connections go down, it must rely on diesel-fuelled generators for power. If they break down, engineers only have 90 minutes to stave off dangerous overheating." (Ukraine's president Volodymyr Zelenskiy pointed out that during the break in power, back-up diesel generators did indeed immediately kick in to ensure continuous power supply, according to Reuters.) But is Russia executing a larger strategy here? Earlier, Russian engineers informed plant workers that the nuclear plant would be switched to Russia's power network in the event of an emergency, according to the head of Ukraine's atomic energy company. Speaking to the Guardian, he adds that the plant's workers were told that "The precondition for this plan was heavy damage of all lines which connect Zaporizhzhia nuclear power plant to the Ukrainian system" — and he worries that Russia is now attempting to create those preconditions. He's not the only one thinking that. Voice of America interviewed a nuclear engineer at the plant who claims that Russian troops have several times "bombed places that cannot affect the safe operation of the power plant. I think that the Russians are trying to discredit the armed forces of Ukraine for the purpose of propaganda.... At the same time, the Russians deliberately damaged the high-voltage power lines that connect the Zaporizhzhia nuclear power plant with the Ukrainian power system.... [T]he Russians want to arrange a small accident and stop Zaporizhzhia for a short time, then supply us with electricity from Crimea and automatically switch the nuclear power plant to the Russian energy system." He also claims to have seen Russian military equipment stored in the plant. For example, "Different types of Russian artillery and missile installations are located both inside the territory of the nuclear power plant and around it, on the perimeter, near the Kakhovka Reservoir." The last power line connecting the reactors to the grid was disconnected by fires "caused by shelling," the Guardian reported. The New York Times reports on the aftermath: Ukrainian engineers were able to restore damaged external power lines after repeated shelling on Thursday, ensuring the facility was able to meet its own power needs and continue to operate safely, according to Ukrainian and international officials, but efforts to reconnect it to the grid took longer. With fires raging around the plant, new shelling in and around the facility on a near daily basis and an exhausted and stressed team of Ukrainian engineers tasked with keeping the Zaporizhzhia Nuclear Power Plant running safely, however, calls for international intervention grew louder. Negotiations with Ukraine and Russia to allow safety experts from the International Atomic Energy Agency to visit and inspect the plant appeared to be making progress, as U.N. officials indicated they expected an agreement soon. "We are in active consultations for an imminent I.A.E.A. mission," a spokesman for the agency said. The stakes are high. "Nowhere in the history of this world has a nuclear power plant become a part of a combat zone, so this really has to stop immediately," Bonnie Denise Jenkins, the State Department's under secretary for arms control and international security, told reporters in Brussels on Thursday. Russian actions, she said, "have created a serious risk of a nuclear incident — a dangerous radiation release — that could threaten not only the people and environment of Ukraine, but also affect neighboring countries and the entire international community." Here's the opinion of that nuclear engineer at the Ukrainian nuclear plant (interviewed by Voice of America). "The expectation is that after the [International Atomic Energy] agency's conclusion, international pressure on Moscow will intensify, and Russia will be required to withdraw heavy weapons and troops from the nuclear power plant. "I think this is unrealistic. The Russians will not leave here by their own will. Without a war, it is impossible."
Read more of this story at Slashdot.
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